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Author Topic: carburettor  (Read 4138 times)

Offline hondatri

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carburettor
« on: December 27, 2014, 04:18:00 PM »
 I am hoping to strip and clean the Carbs on my 77 CB400/4F. I have a full kit of Jets and seals  and would like to know how I replace Needle. Do you count the needle rings from top or bottom
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Offline Bodd

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Re: carburettor
« Reply #1 on: December 27, 2014, 04:56:57 PM »
From the top.

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Offline Bitsa (Ralph Wright - RIP)

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Re: carburettor
« Reply #2 on: December 27, 2014, 06:27:22 PM »
The carbs on the 400 to me are tricky lots of washers etc take great notice how you strip them
Cheers
Bitsa
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Offline Norniron

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Re: carburettor
« Reply #3 on: December 27, 2014, 06:36:06 PM »
Quote from: Bitsa on December 27, 2014, 06:27:22 PM
The carbs on the 400 to me are tricky lots of washers etc take great notice how you strip them
Cheers
Bitsa
Really,i didnt see alot of difference between the 400 and 550 except that the 550s are a bit bigger
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1977 400 cafe
1972 500/4
2013 triumph STR675

Offline Bitsa (Ralph Wright - RIP)

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Re: carburettor
« Reply #4 on: December 27, 2014, 07:35:59 PM »
Your right there but try a set of 750s piece of cake and not fiddley like this setup http://www.sohc.co.uk/index.php/topic,5081.0.html
Cheers
Bitsa
« Last Edit: December 27, 2014, 07:40:14 PM by Bitsa »
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Offline hondatri

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Re: carburettor
« Reply #5 on: December 28, 2014, 02:45:13 PM »
 Thanks all parts look good. Still need to know how to get the needle out to replace it any info.Happy New Year to all and safe riding in 2015
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Offline Trigger

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Re: carburettor
« Reply #6 on: December 28, 2014, 04:12:55 PM »
Not sure what stage you are at with the carb strip. To get the needle out, you remove the top and take the screw out of the slide.
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Offline Bodd

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Re: carburettor
« Reply #7 on: December 28, 2014, 04:25:00 PM »
The needle just sits in the slider resting on the groove clip with the lifter assembly holding it down.

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Offline Norniron

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Re: carburettor
« Reply #8 on: December 28, 2014, 04:54:27 PM »
Magnetic screwdriver is a must
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1977 400 cafe
1972 500/4
2013 triumph STR675

Offline Bryanj

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Re: carburettor
« Reply #9 on: December 29, 2014, 07:50:27 AM »
With a damn good fitting head or the screws will chew up
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Offline hondatri

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Re: carburettor
« Reply #10 on: January 03, 2015, 03:16:08 PM »
 Thank all you Guys for info and Graphics. Done the job done today without any problems. I bought the Carb kit from Japan they were on Ebay. A very extensive kit  ;D ;Donly thing I cannot figure out is they supply a Rubber seal about 3" in dia. Anyone know what it is for.
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Offline Bryanj

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Re: carburettor
« Reply #11 on: January 03, 2015, 03:17:21 PM »
If its a thin section "O" ring its a float bowl seal
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Offline Bodd

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Re: carburettor
« Reply #12 on: January 03, 2015, 04:30:56 PM »
Quote from: hondatri on January 03, 2015, 03:16:08 PM
only thing I cannot figure out is they supply a Rubber seal about 3" in dia. Anyone know what it is for.

If it's like the one the arrow is pointing to it's as Bryanj says, the float bowl seal. [ Guests cannot view attachments ]
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Offline Clem2112

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Re: carburettor
« Reply #13 on: January 03, 2015, 05:43:04 PM »
After they are installed for a while they "mould" to the shape of the bowl so are a bot easier to re-fit.
I found that the petrol makes them grow slightly in length but an hour drying in a warm place shrinks them down to the right size !
Never needed to bond them in place either as they will stay in their groove as a rule !
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Offline hondatri

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Re: carburettor
« Reply #14 on: January 05, 2015, 01:56:27 PM »
Thats the one Guys thanks for the information All you guys on this site have been very helpful.
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